Published 2003 | Version v1
Journal article Metadata-only

Axial excitation of the Δ in chiral quark models

Creators

  • 1. Jozef Stefan Institute, Ljubljana (Slovenia)
  • 2. Faculty of Mathematics and Physics, University of Ljubljana (Slovenia)
  • 3. Centre for Computational Physics, University of Coimbra (Portugal)
  • 4. Department of Physics, University of Beira Interior, Covilha (Portugal)
  • 5. Department of Physics, University of Coimbra (Portugal)
  • 6. Faculty of Education, University of Ljubljana (Slovenia)

Description

We discuss electro-magnetic and weak axial N-Δ transition amplitudes in the linear σ-model and the Cloudy-Bag Model as typical representatives of chiral quark models. We show that good qualitative understanding of the transition can be obtained in models which, in addition to the pion cloud, incorporate a fluctuating σ-field inside the baryon. (author)

Additional details

Publishing Information

Journal Title
Few-Body Systems. Supplementum
Journal Volume
14
Journal Page Range
p. 303-306
ISSN
0177-8811

Conference

Title
18. European Conference on Few-Body Problems in Physics
Dates
8-14 Sep 2002
Place
Bled (Slovenia)

INIS

Country of Publication
Austria
Country of Input or Organization
Austria
INIS RN
35089309
Subject category
S73: NUCLEAR PHYSICS AND RADIATION PHYSICS;
Resource subtype / Literary indicator
Conference
Descriptors DEI
CHIRALITY; DELTA BARYONS; ENERGY-LEVEL TRANSITIONS; EXCITATION; QUARK MODEL; SIGMA MODEL; TRANSITION AMPLITUDES
Descriptors DEC
AMPLITUDES; BARYONS; BOSON-EXCHANGE MODELS; COMPOSITE MODELS; ELEMENTARY PARTICLES; ENERGY-LEVEL TRANSITIONS; FERMIONS; HADRONS; MATHEMATICAL MODELS; N*BARYONS; PARTICLE MODELS; PARTICLE PROPERTIES; PERIPHERAL MODELS